I selected the personal desktop installation class and choosed to select the
packages myself. I didn't included any development packages ( GNOME/KDE/kernel
development ), but after install rpm -qa | grep devel shows the devel versions of
glibc, XFree86, gimp and gtk+.

I didn't go into manual selection of every package screen, just chosen the
categories. If I didn't choose GNOME Development, I shouldn't have gtk+ and gimp
devel.
Perhaps there's a depency in the rest of the packages which shouldn't be there.
Not a big deal, but I thought it worths mentioning.